Blue Planet

Blue Planet is a Silicon Valley company, founded by Brent Constantz in 2012, which has developed a novel carbon capture and utilisation system that permanently removes carbon dioxide from the air, cost effectively. Its technology uses CO2 as a raw material for making carbonate rocks which are used in place of natural limestone rock mined from quarries, which is the principal component of concrete. Then CO2 from flue gas is converted to carbonate by contacting CO2 containing gas with a water-based capture solutions.

This process differentiates Blue Planet from most carbon capture methods as the captured CO2 does not require a purification step, which is an energy and capital intensive process.

Blue Planet has been involved in several major projects including at San Francisco International Airport, where its limestone-coated lightweight aggregate was used in concrete mixes.